sanitaristn.

/ˈsanɪtərɪst/Etymology: < sanitary adj. + -ist suffix.
the world > health and disease > [noun] > good health > state of being conducive to > sanitariness > person
1859 C. Kingsley I. 130 This new ‘National Association’ seems the most hopeful and practical move yet made by the sanitarists.
This entry has not yet been fully updated (first published 1909; most recently modified version published online March 2018).